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A charged particle moves through a magnetic field perpendicular to its direction, then
- a)Both momentum and kinetic energy of the particle are constant
- b)Kinetic energy changes but momentum is constant
- c)Momentum changes but kinetic energy constant
- d)Both momentum and kinetic energy changes
Correct answer is option 'C'. Can you explain this answer?
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Most Upvoted Answer
A charged particle moves through a magnetic field perpendicular to it...
Explanation:
Effect of magnetic field on a charged particle:
- When a charged particle moves through a magnetic field perpendicular to its direction, it experiences a force known as the Lorentz force.
- The Lorentz force is given by the equation F = q(v x B), where q is the charge of the particle, v is its velocity, and B is the magnetic field.
Impact on momentum and kinetic energy:
- In this scenario, the magnetic field exerts a force on the particle causing it to change its direction of motion.
- This change in direction affects the momentum of the particle since momentum is a vector quantity that depends on the direction of motion.
- However, the magnitude of the velocity (and hence kinetic energy) of the particle remains constant because the force applied by the magnetic field is always perpendicular to the velocity vector.
- Therefore, the momentum of the particle changes as it moves through the magnetic field, but the kinetic energy remains constant.
Conclusion:
- In conclusion, when a charged particle moves through a magnetic field perpendicular to its direction, the momentum of the particle changes due to the force exerted by the magnetic field, but the kinetic energy of the particle remains constant throughout the motion.
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Community Answer
A charged particle moves through a magnetic field perpendicular to it...
Momentum of the particle will change and kinetic energy remains same.
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A charged particle moves through a magnetic field perpendicular to its direction, thena)Both momentum and kinetic energy of the particle are constantb)Kinetic energy changes but momentum is constantc)Momentum changes but kinetic energy constantd)Both momentum and kinetic energy changesCorrect answer is option 'C'. Can you explain this answer?
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